Sets the environment variable @variable in the environment of
processes launched from this launcher.
Both the variable's name and value should be in the GLib file name
encoding. On UNIX, this means that they can be arbitrary byte
strings. On Windows, they should be in UTF-8.
Sets the environment variable @variable in the environment of processes launched from this launcher.
Both the variable's name and value should be in the GLib file name encoding. On UNIX, this means that they can be arbitrary byte strings. On Windows, they should be in UTF-8.